72 lines
2.5 KiB
JavaScript
72 lines
2.5 KiB
JavaScript
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'use strict';
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/**
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* @license Angular v<unknown>
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* (c) 2010-2022 Google LLC. https://angular.io/
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* License: MIT
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*/
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/**
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* A `TaskTrackingZoneSpec` allows one to track all outstanding Tasks.
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*
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* This is useful in tests. For example to see which tasks are preventing a test from completing
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* or an automated way of releasing all of the event listeners at the end of the test.
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*/
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class TaskTrackingZoneSpec {
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constructor() {
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this.name = 'TaskTrackingZone';
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this.microTasks = [];
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this.macroTasks = [];
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this.eventTasks = [];
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this.properties = { 'TaskTrackingZone': this };
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}
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static get() {
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return Zone.current.get('TaskTrackingZone');
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}
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getTasksFor(type) {
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switch (type) {
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case 'microTask':
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return this.microTasks;
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case 'macroTask':
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return this.macroTasks;
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case 'eventTask':
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return this.eventTasks;
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}
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throw new Error('Unknown task format: ' + type);
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}
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onScheduleTask(parentZoneDelegate, currentZone, targetZone, task) {
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task['creationLocation'] = new Error(`Task '${task.type}' from '${task.source}'.`);
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const tasks = this.getTasksFor(task.type);
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tasks.push(task);
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return parentZoneDelegate.scheduleTask(targetZone, task);
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}
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onCancelTask(parentZoneDelegate, currentZone, targetZone, task) {
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const tasks = this.getTasksFor(task.type);
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for (let i = 0; i < tasks.length; i++) {
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if (tasks[i] == task) {
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tasks.splice(i, 1);
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break;
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}
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}
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return parentZoneDelegate.cancelTask(targetZone, task);
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}
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onInvokeTask(parentZoneDelegate, currentZone, targetZone, task, applyThis, applyArgs) {
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if (task.type === 'eventTask' || task.data?.isPeriodic)
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return parentZoneDelegate.invokeTask(targetZone, task, applyThis, applyArgs);
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const tasks = this.getTasksFor(task.type);
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for (let i = 0; i < tasks.length; i++) {
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if (tasks[i] == task) {
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tasks.splice(i, 1);
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break;
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}
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}
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return parentZoneDelegate.invokeTask(targetZone, task, applyThis, applyArgs);
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}
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clearEvents() {
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while (this.eventTasks.length) {
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Zone.current.cancelTask(this.eventTasks[0]);
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}
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}
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}
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// Export the class so that new instances can be created with proper
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// constructor params.
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Zone['TaskTrackingZoneSpec'] = TaskTrackingZoneSpec;
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